Sash-cord pulley



' K. CLARK. SASH' GOED PULLBY.'

Patented" Jan. 31,1882..

Unirse Sterns JOHN K. CLARK, OF BUFFALO, NEW YORK.

SASH-CORD PU LLEY.

SPECIFICATION 'forming part of Letters Patent No. 253,005, dated January31, 1882.

Application filed December 6, 1881. (Model.)

To all whom t may concern:

Be it known that l, JOHN K. CLARK, a citizen ofthe United States,residing at Butthlo, in the county of Erie and State of New York, haveinvented new and useful Improvements in Sash-Cord Guides, ot' which thefollowing is a specication.

This invention relates to that class of sashcord guides in which thecasing for the pulley .or sheave is provided at each end with aprojection or spur adapted to pierce or forccitself into the top andbottom walls of the mortise when the casing is driven into position.

Heretofore the casings of this class of sashcord guides have beenbisected or composed of two vertical sections, each portion having atthe topand bottom a projection or spur, so that when the two sectionsare united together the said top and bottom projections or spurs areadjacent to each other, respectively, and can penetrate the wood whenthe easing is driven or forced into the mortise. This construction ofsash-cord guides possesses one desirable feature-namely, the endprojections or spurs adapted toenterthewoodas thecasingis drivenhorizontally into the mortise, thereby enablingtheusualfastening-screwstobedispensedwith; butitis open to suchobjections as have rendered its general manufacture and saleimpracticable, because the casin g, being cast in two parts or sections,with recesses to receive the journal cast on the pulley or sheave, theparts must be shipped or delivered to the trade in separated pieces orsections, which is very objectionable and in fact has rendered thegeneral introduction of this form of sash-cord guide impossible, becausethe construction increases the labor of the carpenter or manufacturer ofthe windowframes, and, further, materially increases the cost ofproduction. It has been attempted to avoid the shipping or -delivery ofthis form of devices to the trade in sections byriveting the twosections of the casin g together when manufactured; but this so greatlyincreases their cost as to render such mpracticable.

The object of my invention is to avoid the objections above stated, andto provide a comparatively cheap, but strong, durable, and et'-ficientsash-cord guide which can be delivered to the consumer completeand adapted to be placed in position without further manipulation orlabor, and without the necessity ot' employing screws to secure them inplace.

rllo these ends my invention consists in a sash-cord guide composed of aeasing castin a single piece, with end projections or ears andrearwardly-extending webs or tlanges joined to and supporting saidprojections or ears, in combination with an axle or journal-pin eX-tending through and supporting` a pulley or sheave arranged to revolvewithin said casing.

In the accompanying drawings, Figure l is aperspectivc view of myimproved sash cord guide; Fig. 2, a side elevation ot' the saine inposition in a window-frame; Fig. 3, an edge view from the rear ot` thecasing; and Fig'.'4, detached perspective views of the casing, thepulley or sheave, and the axle or journal-pin.

In the drawings, the letter A indicates the easing of the sash-cordguide, which is cast in one piece, with rounded ends t a, projectingears b b, and webs or tlanges c c, which extend longitudinallyin arearward direction from the rear side of the ears b b,and attachedthereto in the process of moldingor casting'. The tace of the casing isonly the width thereof', being formed without the usual rims or ilangesat the sides. rlhe casingis provided with apertures d in its side,through which anda central perforation, c,in the pulley or sheave B,passes the axle orjournal-pinj, the ends ot' the latter being upset orriveted from the exterior of the case to tix it in position, so that thepulley revolves thereon. The Webs or flanges c extend to the rear edge,g, of the easing, and are tapered rearwardly, and are beveled orsharpened at their outer longitudinal edges, as at IL, while their rearcorners are rounded and beveled or sharpened, as at t, all for thepurpose of permitting said webs or anges to readily pierce or penetratethe solid Wood at the top and bottom of the mortise when the casing isdriven or forced horizontally into the same, which construction of websor tlan ges is oi`con siderable importance, in that it greatly increasesthe facility and convenience with which the casings can be applied totheir proper position. It will be observed, from the contour of the websor flanges and end projections or ears, that the casing cast in onepiece therewith can be readily withdrawn from the sand after the ends ofthe casing are substantially or identically the counterpart of eachother, and therefore the saine is reversible and can be quickly appliedin position, no matter which end is at the top, and, as Will be obvious,this is of importance in savingtiine and in the convenience with whichthe casings can beaccurately driven or forced into position.

The casing having been castin one piece with the imperf'orate endprojections or ears, b b, rounded ends a, and square webs or anges c c,abutting against and forming a part of` the said ears or projections, asherein before described, the pulley or sheave B is placed within theeasing, and the axle or journal-pin f passed through the apertures d andthrough the pulley or sheave, after which its exterior ends are upsetorriveted against the side walls of' the casing, after which the sash'cordguide is ready for the trade, and is capable of' being applied towindow-frames without further manipulation and without the necessity of'employing any fastening-screws whatever.

To apply the improved sash-cord guide the inortise in the window-frameis formed in any suitable manner the exact lengt-h and Width of thecasing proper, and at each end thereof' a seat is formed of the shapeand depth of the end projections or ears, b b, the depth of such seatbeing, for example, one-eighth of an inch if the projections or ears beof that thickness. The casing is then inserted in the inortise, and diiven or forced horizontally into the same by the employment of a hammeror other in strument, whereby the end webs or flanges, through theirbeveled edges, are caused to pierce or penetrate the solid wood at thetop and bottom of the mortise until the projections or ears are tightlyseated in their respective seats and the face of the casing flush withthe plane of the window-frame. The casing will, through theinstrumentality of' the webs or anges, be firmly and substantiallyconfined in position without the aid of other fastening devices, such asscrews.

The Webs or flanges of' the casing being at tached to or forming part ofthe end projections or ears, as hereinbefore set forth, sub serveanother function, in that they strengthen, support, and sustain the saidprojections or ears, and thereby avoid the liability of the saine or thecasing heilig broken When struck forcibly with a hammer to drive orforce the casing into position.

I am aware that the casing of a'sash-eord guide has been cast in onepiece; but as heretofore constructed it has been necessary to employ ascrew or screws to secure it in position, and I do not therefore Wish tobe understood asv broadly claiming a casing for a pulley or sheave castin one piece; but

What I do claim as my invention is- A sash-cord guide composed of' acasing cast in a single piece, With end projections or ears, andrearwardly-extending Webs or flanges supporting said projections orears, in combina tion with anaxle or journal-pin supported by the sidewalls of' the casing, and a pulley or sheave arranged on said axle orjournal-pin, substantially as and for the purposes set forth.

In testimony whereof' I have hereunto set my hand in the presence of twosubscribing witnesses.

JOHN K.l CLARK.

Witnesses JOHN It. BENTLEY, E. M. Mix.

